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RIC® Cylinder

Since the beginning of optical fiber production, there has been a steady growth in the size of preforms being manufactured by Heraeus’ customers. As single mode preform sizes have increased, so has the amount of fiber being drawn from these preforms. With the Rod-in-Tube (RIT) technology our largest overclad tubes facilitated preform sizes up to 900 km. Heraeus Rod-in-Cylinder (RIC®) technology can result in preforms equivalent to fiber lengths of 6,000 km. These large preforms can increase our customer’s profitability and significantly improve their manufacturing costs and efficiencies without compromising product quality.

Financial and Operational Benefits

The Online RIC® technology for production of single mode fibers helps our customers to become significantly more cost competitive. The cost benefits compared to Offline RIT are substantial:
  • Economy of scale
  • No offline jacketing process necessary
  • Reduction of b/a ratio, and therefore improved efficiency of our customers' core rod deposition equipment.
  • Improved utilization of fiber draw equipment

Technical Benefits

Using Heraeus’ high purity F300 jacketing material ensures the production of world class optical fiber. Since the F300 cladding material is essentially free of OH, low and zero water peak fibers can be readily made using the RIC® process. In production, break rates below 10 breaks per 1,000 km of fiber can be achieved thanks to the purity of our material, leading to superior product performance.

RIC® cylinders are fabricated using CNC-controlled lathes and honing machines, resulting in outstanding geometrical performance. The ground outer surface of the cylinders is suitable for direct fiber draw and results in superior fiber geometries.

Typical Cylinder Dimensions

OD 150 ... 200 mm
OD max - OD min ≤ 0.6mm
ID tol +/- 0.5 mm
Length 1,500 mm & 3,000 mm
Ovality ≤ 0.1 mm
Siding ≤ 1 mm
Bow ≤ 0.5 mm/m